Sinner, I think the holes in your button are spaced a little too far apart, as a result of starting with a lower res quad plane.  It's rare you see buttons where the holes are that far apart relative to the overall surface area of the object.  I suppose you could select those edges and move them closer together manually afterwards, but 6x6 is the minimum resolution I recommend for getting the correct topology to work with.  There's a lot of room at the end of the procedure to optimize the subdivided mesh, as I pointed out earlier, and get it down to reasonable polycounts for any purpose, if so desired.

Not to mention, you could always simply bake the high resolution verison to normal maps or displacement maps for use on the lower resolution cage.

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